Question

Cu, Ag and Au all are metals good conductors of electricity?

Answer 1

Hint: In this question, we will first learn about the behavior of electrons in the metal and then we will discuss the physical and chemical properties of all the given metals in the question i.e., copper, silver and gold. This will give us better understanding .

Complete answer:
We know that In metals, there is presence of free held lose electrons because as they form metallic bonds with each other, and this creates formation of many electrons.
Further, since metals have low resistance and high electrical and heat conductivity. Some of the metals are better conductors than others.
Here we can say that in metal Aluminium and Titanium are relatively poor conductors of heat and electricity when compared to copper.
Therefore, we can say that Cu, Ag and Au all are good conductors of electricity.

Additional Information: Here, copper is a chemical element, it is represented by the symbol Cu. The atomic number of copper is 29. Some of the physical properties of copper are that it is soft, malleable, and ductile metal with very high thermal and electrical conductivity. When a fresh surface of pure copper is exposed it shows a pinkish-orange color.
Silver is a chemical element and is represented by the symbol Ag . The atomic number of silver is 47.some of the physical properties of silver are; it is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. This metal is found in the Earth's crust in the pure, free elemental form as an alloy along with gold and other metals. Most of the silver is produced as a byproduct of copper, gold, lead, and zinc refining.
Gold is a chemical element and is represented by the symbol Au. The atomic number of gold is 79, thereby making it one of the higher atomic number elements which occur naturally. In a pure form, it is actually a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Further, chemically, gold is a transition metal and a group 11 element. It is found to be one of the least reactive chemical elements and is solid under standard conditions.

Note: We should remember that in conductors, the valence band and conduction band overlap each other and there is no gap between the bands. In insulators there is a large band gap between the two bands i.e., valence band and conduction band.